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  • Video Thumbnails using ffmpeg

    - by LenzM
    I'm looking for a nice short easy way to create a series of thumbnails for any given video file. I'm almost there using ffmpeg, here's what I have: ffmpeg -i /tmp/video.avi -r 1 -ss 60 -r 1 foo-%03d.jpeg` The only problem is that this takes a shot every second and I'd like to make it every minute or so. I tried setting the -r value to 1/60 or .02 to no avail. For reference, here's the old script I was using that only worked for some files: #!/bin/bash # grab a screenshot every 60 seconds file=$1 orig_dir=`pwd` mins=`exiftool "$file" | grep "Duration" | awk -F : '{print $2}' | grep --only-matching '[0-9]*'` dir="$file-screenshots" mkdir "$dir" cd "$dir" mplayer -vo png -vf screenshot -sstep 60 -frames $mins -ao null "../$file" cd "$orig_dir" This doesn't have to be on the command line, it's just that it always ends up being easiest.

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  • How to run bash script from windows using plink on linux

    - by user128877
    I'm trying to run a simple bat file from windows that will run a bash script on linux machine. The bash script is located on the linux machine. For example: I'm trying to run this bat file from windows plink.exe -pw <password> root@<ip> bash -c "/root/script.sh" Result: When running from windows the cmd is stuck forever when running the specific script (/root/script.sh) from the linux machine it's working just fine. The script contain ruby code and I'm using RVM

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  • Batch processing multi-TIFF in Irfan view

    - by hemalshah
    I have to convert DPI of more than 5k Tiff images on a monthly basis from 200x200 to 100x100. I can do that in Irfan view using a .bat file that i have created.. the following is the .BAT file code @"c:\program files\irfanview\i_view32.exe" "e:\batch1*.tif /aspectratio /resample /tifc=4 /dpi=(100,100) /convert=e:\batch2*.tif" %* Where tifc=4 is Fax 4 compression However, the above code doesn't help me change the DPI for other pages except for Only the first page in the tiff thats getting converted to 100 DPI. Rest all pages are still 200 DPI. I am using WinXP Professional and Irfan View. Can anyone tell me what I am missing. Or any other alternative program where I can create a .bat file and run the batch process using Command line?

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  • How to avoid tilde ~ in Bash prompt?

    - by Jirka
    Hello! I have set my prompt in bash in a such way that I can use it directly in scp command: My current PS1 string: PS1="\h:\w\n$" And the prompt looks like this: lnx-hladky:/tmp/plugtmp $ What I don't like at all is the fact that $HOME directory is displayed as tilde. Can this be avoided? It's causing problems when switching between different users. Example: lnx-hladky:~/DOC $ Documentation says: \w : the current working directory, with $HOME abbreviated with a tilde \W: the basename of the current working directory, with $HOME abbreviated with a tilde Is there any possibility to avoid $HOME being abbreviated with a tilde? I have found one way around but I feel like it's overcomplicated: PROMPT_COMMAND='echo -ne "\e[4;35m$(date +%T)\e[24m$(whoami)@$(hostname):$(pwd)\e[m\n"' PS1=$ Can anyone propose a better solution? I have a feeling it's not quite OK to run so many commands just to get prompt. (date,whoami,hostname,pwd). Thanks a lot! Jirka

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  • Giving PHP the permission to make a git pull request

    - by Bernd
    Hello, I would like to allow PHP to execute a Git pull command. But there are some problems with the user and permissions. How did you solve the problem? PHP runs as user www-data. Therefore I've changed the .git directory owner/group to www-data (chown www-data:www-data -R .git). As it is turned out later www-data has no SSH keys. Is it a good idea to give it one? If yes where to place? Or is it possible to allow it to use a specific key. Best regards, Bernd

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  • How-to: determine 64-bitness of Windows? [closed]

    - by warren
    Possible Duplicate: Tell the version of Windows XP (64-bits or 32-bits) Is it possible to determine whether a given installation of Windows is 32- or 64-bit? From right-clicking on My Computer, and selecting Properties, it appears that such information is not readily available. Typing ver at the command prompt also doesn't seem to return anything about the nature of the platform in which it is installed. Under Linux, I'd use uname -a to find out what kernel was running. Is there an analog on Windows?

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  • Running Mac OS X 10.6 my users home directory is wrong

    - by Erik Miller
    Somehow my home directory on my Mac has been changed and I'm not sure how to go about changing it back, I'm more of a linux guy and Mac OS X has some other mechanism for storing that information. Basically when I log into the machine normally than start a terminal window. I start in the /Users/erik_miller directory, which is my home directory, but when I run some this like cd ~ The machine tries to change to /Users/erik_miller. Yes, the same path with a period on the end. I can change my $HOME environment variable for the session, but the next time I start the machine it reverts. So, I think if I can find where that information is stored I can just change it there and hopefully all will be well.

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  • Can I "reprogram" an American Express USB drive?

    - by SkippyFire
    I recently received a USB drive that looks like a credit card as a promotion. The drive portion flips out to plug it in. When you plug it in, it opens the run dialog, and opens a URL to an American Express web page. I was able to find it in the Device Manager: But I don't know what else to do? Is there a way I can convert this into a plain old USB drive? Or better yet, can I modify the command that it runs when inserted into a computer?

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  • Giving PHP the permission to make a git pull request

    - by Bernd
    I would like to allow PHP to execute a Git pull command. But there are some problems with the user and permissions. How did you solve the problem? PHP runs as user www-data. Therefore I've changed the .git directory owner/group to www-data (chown www-data:www-data -R .git). As it is turned out later www-data has no SSH keys. Is it a good idea to give it one? If yes where to place? Or is it possible to allow it to use a specific key. Best regards, Bernd

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  • How do I send email with sendmail to external hosts?

    - by Jake
    If I wanted to send an email to a user on the same linux machine, I can run: echo -e "Subject: Foo\n\nBar\n" | sendmail -v jacob But if I run: echo -e "Subject: Foo\n\nBar\n" | sendmail -v [email protected] It will give me the error: 050 >>> MAIL From:<jacob@mu> SIZE=321 050 550 5.1.8 Cannot resolve your domain {mx-us011} If my machine has access to the internet but is behind a router and has no domain associated with it, can I use sendmail to send mail to this address? Do I need to connect through an SMTP server? Can I do that with sendmail? If I use sendmail's -f option and put my gmail account there it will work. Can (or should I) I use my IP address? echo -e "Subject: Foo\n\nBar\n" | sendmail -v -f [email protected] [email protected] I'm a bit lost on how all this comes together in sending mail from the command line.

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  • ProFTPd server on Ubuntu getting access denied message when successfully authenticated?

    - by exxoid
    I have a Ubuntu box with a ProFTPD 1.3.4a Server, when I try to log in via my FTP Client I cannot do anything as it does not allow me to list directories; I have tried logging in as root and as a regular user and tried accessing different paths within the FTP Server. The error I get in my FTP Client is: Status: Retrieving directory listing... Command: CDUP Response: 250 CDUP command successful Command: PWD Response: 257 "/var" is the current directory Command: PASV Response: 227 Entering Passive Mode (172,16,4,22,237,205). Command: MLSD Response: 550 Access is denied. Error: Failed to retrieve directory listing Any idea? Here is the config of my proftpd: # # /etc/proftpd/proftpd.conf -- This is a basic ProFTPD configuration file. # To really apply changes, reload proftpd after modifications, if # it runs in daemon mode. It is not required in inetd/xinetd mode. # # Includes DSO modules Include /etc/proftpd/modules.conf # Set off to disable IPv6 support which is annoying on IPv4 only boxes. UseIPv6 off # If set on you can experience a longer connection delay in many cases. IdentLookups off ServerName "Drupal Intranet" ServerType standalone ServerIdent on "FTP Server ready" DeferWelcome on # Set the user and group that the server runs as User nobody Group nogroup MultilineRFC2228 on DefaultServer on ShowSymlinks on TimeoutNoTransfer 600 TimeoutStalled 600 TimeoutIdle 1200 DisplayLogin welcome.msg DisplayChdir .message true ListOptions "-l" DenyFilter \*.*/ # Use this to jail all users in their homes # DefaultRoot ~ # Users require a valid shell listed in /etc/shells to login. # Use this directive to release that constrain. # RequireValidShell off # Port 21 is the standard FTP port. Port 21 # In some cases you have to specify passive ports range to by-pass # firewall limitations. Ephemeral ports can be used for that, but # feel free to use a more narrow range. # PassivePorts 49152 65534 # If your host was NATted, this option is useful in order to # allow passive tranfers to work. You have to use your public # address and opening the passive ports used on your firewall as well. # MasqueradeAddress 1.2.3.4 # This is useful for masquerading address with dynamic IPs: # refresh any configured MasqueradeAddress directives every 8 hours <IfModule mod_dynmasq.c> # DynMasqRefresh 28800 </IfModule> # To prevent DoS attacks, set the maximum number of child processes # to 30. If you need to allow more than 30 concurrent connections # at once, simply increase this value. Note that this ONLY works # in standalone mode, in inetd mode you should use an inetd server # that allows you to limit maximum number of processes per service # (such as xinetd) MaxInstances 30 # Set the user and group that the server normally runs at. # Umask 022 is a good standard umask to prevent new files and dirs # (second parm) from being group and world writable. Umask 022 022 # Normally, we want files to be overwriteable. AllowOverwrite on # Uncomment this if you are using NIS or LDAP via NSS to retrieve passwords: # PersistentPasswd off # This is required to use both PAM-based authentication and local passwords AuthPAMConfig proftpd AuthOrder mod_auth_pam.c* mod_auth_unix.c # Be warned: use of this directive impacts CPU average load! # Uncomment this if you like to see progress and transfer rate with ftpwho # in downloads. That is not needed for uploads rates. # UseSendFile off TransferLog /var/log/proftpd/xferlog SystemLog /var/log/proftpd/proftpd.log # Logging onto /var/log/lastlog is enabled but set to off by default #UseLastlog on # In order to keep log file dates consistent after chroot, use timezone info # from /etc/localtime. If this is not set, and proftpd is configured to # chroot (e.g. DefaultRoot or <Anonymous>), it will use the non-daylight # savings timezone regardless of whether DST is in effect. #SetEnv TZ :/etc/localtime <IfModule mod_quotatab.c> QuotaEngine off </IfModule> <IfModule mod_ratio.c> Ratios off </IfModule> # Delay engine reduces impact of the so-called Timing Attack described in # http://www.securityfocus.com/bid/11430/discuss # It is on by default. <IfModule mod_delay.c> DelayEngine on </IfModule> <IfModule mod_ctrls.c> ControlsEngine off ControlsMaxClients 2 ControlsLog /var/log/proftpd/controls.log ControlsInterval 5 ControlsSocket /var/run/proftpd/proftpd.sock </IfModule> <IfModule mod_ctrls_admin.c> AdminControlsEngine off </IfModule> # # Alternative authentication frameworks # #Include /etc/proftpd/ldap.conf #Include /etc/proftpd/sql.conf # # This is used for FTPS connections # #Include /etc/proftpd/tls.conf # # Useful to keep VirtualHost/VirtualRoot directives separated # #Include /etc/proftpd/virtuals.con # A basic anonymous configuration, no upload directories. # <Anonymous ~ftp> # User ftp # Group nogroup # # We want clients to be able to login with "anonymous" as well as "ftp" # UserAlias anonymous ftp # # Cosmetic changes, all files belongs to ftp user # DirFakeUser on ftp # DirFakeGroup on ftp # # RequireValidShell off # # # Limit the maximum number of anonymous logins # MaxClients 10 # # # We want 'welcome.msg' displayed at login, and '.message' displayed # # in each newly chdired directory. # DisplayLogin welcome.msg # DisplayChdir .message # # # Limit WRITE everywhere in the anonymous chroot # <Directory *> # <Limit WRITE> # DenyAll # </Limit> # </Directory> # # # Uncomment this if you're brave. # # <Directory incoming> # # # Umask 022 is a good standard umask to prevent new files and dirs # # # (second parm) from being group and world writable. # # Umask 022 022 # # <Limit READ WRITE> # # DenyAll # # </Limit> # # <Limit STOR> # # AllowAll # # </Limit> # # </Directory> # # </Anonymous> # Include other custom configuration files Include /etc/proftpd/conf.d/ UseReverseDNS off <Global> RootLogin on UseFtpUsers on ServerIdent on DefaultChdir /var/www DeleteAbortedStores on LoginPasswordPrompt on AccessGrantMsg "You have been authenticated successfully." </Global> Any idea what could be wrong? Thanks for your help!

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  • Sharing storage on Linux and Solaris

    - by devlearn
    I'm looking for a solution in order to share a san mounted volume between several hosts running on Linux (RHEL) and/or Solaris (Sparc). Note that I basically need to share a set of directories containing large binary files that are accessed in random R/W mode. I have the following reqs : keep the data on the SAN suitable i/o performances as the software is pretty demanding on IOPS stick to a shared file system as I can't afford a cluster fs (lack of MDS/OSS infrastructure) compression could be really usefull For now I've found only the following candidates : GFS2 , supports Linux only, no compression VxFS , supports Linux and Solaris, compression supported So if you have some suggestions for this list, I'll really welcome them. Thanks in advance,

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  • Passing a file with multiple patterns to grep

    - by Michael Goldshteyn
    Let's say we have two files. match.txt: A file containing patterns to match: fed ghi tsr qpo data.txt: A file containing lines of text: abc fed ghi jkl mno pqr stu vwx zyx wvu tsr qpo Now, I want to issue a grep command that should return the first and third line from data.txt: abc fed ghi jkl zyx wvu tsr qpo ... because each of these two lines match one of the patterns in match.txt. I have tried: grep -F -f match.txt data.txt but that returns no results. grep info: GNU grep 2.6.3 (cygwin) OS info: Windows 2008 R2 Update: It seems, that grep is confused by the space in the search pattern lines, but with the -F flag, it should be treating each line in match.txt as an individual match pattern.

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  • Sane(r) way to get character-encoding of CLI?

    - by danyowdee
    Hi all! I was writing a CLI-Tool for Mac OS X (10.5+) that has to deal with command-line arguments which are very likely to contain non-ASCII characters. For further processing, I convert these arguments using +[NSString stringWithCString:encoding:]. My problem is, that I couldn't find good information on how to determine the character-encoding used by the shell in which said cli-tool is running in. What I came up with as a solution is the following: NSDictionary *environment = [[NSProcessInfo processInfo] environment]; NSString *ianaName = [[environment objectForKey:@"LANG"] pathExtension]; NSStringEncoding encoding = CFStringConvertEncodingToNSStringEncoding( CFStringConvertIANACharSetNameToEncoding( (CFStringRef)ianaName ) ); NSString *someArgument = [NSString stringWithCString:argv[someIndex] encoding:encoding]; I find that a little crude, however -- which makes me think that I missed out something obvious...but what? Is there a saner/cleaner way of achieving essentially the same? Thanks in advance D

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  • grub crc error after decompressing linux

    - by w00t
    Hi, I have a debian with a raid1 on it. Both HDDs have bootable flags and grub setup in MBR. If I only start up with sda, linux boots. If I only start up with sdb, grub shows up and says Decompressing Linux... crc error -- System halted I have reinstalled grub a few times now but still nothing. It goes like this: /dev/md0 contains /dev/sda1 /dev/sdb1 find /boot/grub/stage1 shows (hd0,1) (hd0,1) The line that boots Linux shows: root (hd0,0) kernel /vmlinuz-2.6.26-1-686 initrd /initrd.img-2.6.26-1-686 This kind of renders my "redundant" array useless. Any clues? update: just to mention, these are 2 different HDDs, sda is 320gb and sdb is 400gb. Both are WD and both have exactly the same partitions, cloned using sfdisk.

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  • How to recursively move all files (including hidden) in a subfolder into a parent folder in *nix?

    - by deadprogrammer
    This is a bit of an embracing question, but I have to admit that this late in my career I still have questions about the mv command. I frequently have this problem: I need to move all files recursively up one level. Let's say I have folder foo, and a folder bar inside it. Bar has a mess of files and folders, including dot files and folders. How do I move everything in bar to the foo level? If foo is empty, I simply move bar one level above, delete foo and rename bar into foo. Part of the problem is that I can't figure out what mv's wildcard for "everything including dots" is. A part of this question is this - is there an in-depth discussion of the wildcards that cp and mv commands use somewhere (googling this only brings very basic tutorials).

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  • mv directory to overwrite another

    - by gbjbaanb
    I may be going bonkers here, but I'm trying to move a directory to a new location, overwriting the contents (on Linux, using bash). Everytime I try it, it responds with "mv: cannot move `./src' to a subdirectory of itself" eg. I have: /src /new/dir/src /$ mv src/ new/dir/ If I delete the destination dir, then it works. I know I can move the contents of the source dir to overwrite the destination, but I'd like to use the same command to overwrite the destination if it already exists, or move the source if it doesn't.

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  • Why does cat not use options the way I expect UNIX programs to use switches?

    - by Chas. Owens
    I have been a UNIX user for more years than I care to think about, and in that time I have been trained to expect that when contradictory switches are given to a program the last one wins. Recently I have noticed that cat -bn file and cat -nb file both use the -b option (number blank lines) over the -n option (number all lines). I get this behavior on both BSD and Linux, so I don't think it is an implementation quirk. Is this something that is specified somewhere and am I just crazy for expecting the first example to number all lines?

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  • Is it possible to set the name of the current virtual desktop via commandline?

    - by Dave Vogt
    The utility wmctrl has the possiblity to list the names of all virtual desktops: % wmctrl -d 0 - DG: 3360x1200 VP: 0,0 WA: 0,0 3360x1199 Mail / Comm 1 * DG: 3360x1200 VP: 0,0 WA: 0,0 3360x1199 Web / Docs 2 - DG: 3360x1200 VP: 0,0 WA: 0,0 3360x1199 A 3 - DG: 3360x1200 VP: 0,0 WA: 0,0 3360x1199 B I would like to be able to change, from the commandline, the name of the current desktop to something else. This is possible by using some pagers, for example, but I couldn't find out how to do it from the command line. Update: the xprop utility seems to be able to set the desktop names, but I could not figure out the exact format to do so, yet: % xprop -root -f _NET_DESKTOP_NAMES 8s -set _NET_DESKTOP_NAMES asdf % xprop -root _NET_DESKTOP_NAMES _NET_DESKTOP_NAMES(UTF8_STRING) = "asdf", "Web / Docs", "A"

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  • Can I find the session ID for a user logged on to another machine?

    - by Dan Tao
    I want to open an application on another computer on the same network via the command line. The scenario here is that the user is in a room surrounded by about 20 computers and wants to be able to launch the same app on every computer without walking from screen to screen opening it up on each individual machine. I've discovered that I can get the basic functionality for this using PsExec as follows: psexec \\[computer] -u [username] -p [password] -d -i [SessionID] [program] For computer, username, password, and program, I'm good. Does anyone know of a way I can figure out which SessionID is assigned to a particular user logged on to a particular machine on the network? Alternately, is there a better way to go about what I'm trying to accomplish?

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  • Rsync plugin to many local wordpress installs via script or cli

    - by Nick Abbey
    I am maintaining a large number of wordpress installs on a production server, and we are looking to deploy InfiniteWP for managing these installs. I am looking for a way to script the distribution of the plugin folder to all of these installs. On server wp-prod, all sites are stored in /srv//site/ The plugin needs to be copied from ~/iws-plugin to /srv//site/wp-content/plugins/ Here's some pseudo code to explain what I need to do: array dirs = <all folders in /srv> for each d in dirs if exits "/srv/d/site/wp-content/plugins" rsync -avzh --log-file=~/d.log ~/plugin_base_folder /srv/d/site/wp-content/plugins/ else touch d.log echo 'plugin folder for "d" not found' >> ~/d.log end end I just don't know how to make it happen from the cli or via bash. I can (and will) tinker with a bash or ruby script on my test server, but I'm thinking the command-line-fu here on SF is strong enough to handle this issue much more quickly than I can hack together a solution. Thanks!

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  • Automating Disk Cleanup on Windows using commandline

    - by Ram
    I asked this question on the MSDN forums but there was no response. Maybe someone might be able to help me out here. I am trying to run Disk Cleanup in the command prompt (and through a C# program) and so I went through all the available options from this link: http://support.microsoft.com/kb/315246 While I am just trying to understand what I can do, it would be good if someone could explain why the drive option /d cannot be set while specifying /sagerun:n Or is it possible, by some way, to run /sagerun for a specific drive? Thanks.

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  • Scripted printer configuration changes

    - by David Steven
    I've got about a dozen Windows XP machines that I need to make a couple specific printer configuration changes to. The printer is "virtual" printer for an electronic delivery service. I'd like to not have to visit each machine individually. I already have the means to execute commands remotely on the machines, I just can't seem to find away to adjust these settings via command line or script. Specifically I need to be able to make the following changes: 1) As an admin user: - Device Settings - Font Substitution Table/Courier New - Change to "Courier" 2) As a specific* user: - Printer Preferences - Paper/Quality - Advanced - Change Graphic/Print Quality to "600 x 600" - Change Document Options/Printer Features/Graphics Mode to "HP-GL/2" *This change is a per user configuration, unless there's some way to make it once. In this situation I only really need it for a specific (different) user on each machine.

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  • How to parse pipe with multiple commands independently?

    - by yarun can
    How can I parse output of a single command by multiple commands without truncating at each step? For example ls -al|grep -i something will pass every line that has "something" in it to the next pipe which is fine, but that also means every other line in the pipe is discarded since there wont be matching the condition. What I want is to be able to operate on single pipe by many commands independently. In this case it a pipe from Mutt which passes the whole message body. I want to get grep, sed, delete and assign each of these to bash variables maybe. Initially what I want is to be able to assign "message id" to a variable, "subject" to another variable etc Then pass those into proper commands arguments. Here is how it will be MessageBodyFromMutt|grep something -Ax -Bx |grep another thing from the original message| sed some stuff from the original message| cut from here to there Obviously the above line does not do what I want. I want all these commands to operate on the original message body. I hope it makes sense

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  • Editing notepad C:\Windows\System32\drivers\etc\hosts file from within windows 7

    - by Ruvi
    I would like to add an address to C:\Windows\System32\drivers\etc\hosts. I am running Windows 7 (Hebrew edition). I am the system administrator. I have tried the command "notepad C:\Windows\System32\drivers\etc\hosts" to edit the file. I can write into the file but the system does not allow me to save into the file. What can be done to be able to make the addition? What is the correct format for this type of file? All lines in the existing file begin with "#". Does this mean anything?

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